time-dependent loading and boundary condition in parfeap

[36051121]

Dear all,
I try to use parfeap to calculate the material response under a time dependent loading, as shown the boundary condition in the following. Generally, I use "eprop" and "prop" to achieve my goal. But when I use parfeap, I find that "eprop" and "prop" are not included in the generated input files (Ifile_0001, Ifile_0002, Ifile_0003). So no time-dependent loading is applied. The calculated results are totally wrong. Did any one have the similar experience ? I would like your tips or suggestions on tis issue.
Many thanks.
Best regards,
MIN

Code: [Select]

Eboun
2 0  0 0 1 0 0
2 b  0 0 1 0 0
edis
2 0  0 0 f 0 0
2 b  0 0 0 0 0
eprop
2 0  0 0 1 0 0
batch
prop,,1
end
2 6
0.0,0.0   0.25,1.0  0.75,-1.0  1.25,1.0  1.75,-1.0  2.0,0.0

[Prof. R.L. Taylor]

You may need to create a "flat" file using outm before you partition.

[36051121]

Thanks for the help. But I do not know why this command (based on METIS)

Code: [Select]

BATCh
GRAPh,, 4
OUTDomains
END batch
STOPdoes not work for the time-dependent loading. When I use this command to generate 4 input files (Ifile_0001,Ifile_0002,Ifile_0003,Ifile_0004), the command " prop,,1 " is not included automatically.
The command "outmesh" is for parMetis. In the manual, it writes "This is only needed for problems so large that they can not be partitioned with METIS.". It seems that "outmesh" cannot solve the problem.

[Prof. R.L. Taylor]

You run 'outm' on your orginal (scalar) problem.  It creates an "I-file" which has all the nodes, elements, boundary conditions, forces, displacements etc.  -- it does not have any solution commands.

You then partition the problem (using either metis or parmetis) to create you four input files for the parallel solution (and in addition a 'solve*' file.   In the solve file you place all the solution commands to be done in batch (prop, time, tang, etc.).

Now you run the parallel problejm

[36051121]

Thanks for your kind help. I have solved this problem. I just put the prop command

Code: [Select]

batch
prop,,1
end
2 6
0.0,0.0   0.25,1.0  0.75,-1.0  1.25,1.0  1.75,-1.0  2.0,0.0in the solve.file.
It is very strange that the command "batch initial" can be put in the Ifile for partition. But if the command "batch prop" is put in the Ifile, the generated 4 Ifile_0001-4 does not include the  command "batch prop". Anyway, I have got this experience. Vielen Dank.

[Shuai Wang]

Thanks, it is very useful to me.